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Ex-American Express founders who just went stealth

15 founders who worked at American Express started a company in stealth in the last 1783 weeks.

Ex-American Express
Showing 15 of 15 founders

Cassandra Sebastian Pernia

Founder/CEO
Left
American Express
Sr. Analyst, Co-Brand Product Management -Portfolio Conversions
Before that
Went stealthSep 2026
Work
  • Sr. Analyst, Co-Brand Product Management -Portfolio Conversions at American Express2013-2016 · left Mar 2016
  • Founder/CEO at Zyro2024-2026
  • Founder at Wimm Co.2019-2025
  • Founder/CEO at Wimm2019-2025
  • Head of Product at Magna2023-2024
  • Head of Product, Reach Core Platform at Reach Platform2022-2023
  • Advisor// US Market Lead at Community Bond2020-2022
Education
  • Rutgers UniversityBA

Aayush Sarna

Co-Founder
Left
American Express
Lead Credit Analyst (Project Management, Customer Experience and Debt collections)
Before that
Went stealthSep 2026
Work
  • Lead Credit Analyst (Project Management, Customer Experience and Debt collections) at American Express2014-2020 · left Dec 2020
  • Senior Manager at Kapture CX2024-2025
  • Solutions Consultant - Global Delivery & Services Team at Uniphore2022-2024
  • Assistant Manager Customer Service & Operations (Strategy, Operations and Project Management) at Bajaj Finserv Health2021-2022
  • Basketball Player at Basketball Federation Of India2009-2012
Education
  • Indira Gandhi National Open UniversityBA

Muiz Ahmed

Co-Founder
Left
American Express
Risk Analyst - Enterprise Risk Management
Before that
Went stealthSep 2026
Work
  • Risk Analyst - Enterprise Risk Management at American Express2022-2024 · left Feb 2024
  • Risk Analyst at aafaq Islamic Finance PSC2024-2026
  • Fraud & Disputes Investigator at Capital One2021-2021
  • Group Credit Intern at Emirates NBD2019-2019
  • Accounting Intern at Derby Group of Companies2019-2019
Education
  • University of TorontoBS
  • GEMS Modern Academy,Dubai

Avinash Kumar

Founder
Left
American Express
Senior Product Manager
Before that
Went stealthSep 2026
Work
  • Senior Product Manager at American Express2016-2019 · left Mar 2019
  • Vice President of Tech & Product at SafeTree2021-2023
  • Head of Product -Technology at Grab (Grab a Grub Services Ltd)2021-2021
  • Group Product Manager at RenewBuy2019-2021
  • Senior Project Manager at Google2014-2016
  • Product Manager at O2 (Telefónica UK)2013-2014
Education
  • The University of SheffieldBE
  • Purdue University
  • MIT

Yuval Efrati

CEO
Left
American Express
Director
Before that
Went stealthSep 2026
Work
  • Director at American Express2005-2011 · left Jan 2011
  • Chief Commercial Officer at Persado2023-2025
  • Chief Commercial Officer at Keshet Media Group2022-2022
  • Chief Commercial Officer at Optimove2020-2021
  • Chief Commercial Officer at Persado2015-2020
  • Senior Vice President / Director at Citi2011-2014
Education
  • Stanford UniversityMaster's
  • Blavatnik School of Computer Science and AI, Tel Aviv UniversityBachelor's
  • Tel Aviv UniversityBachelor's

Gabriel Ionita

Co-Founder
Left
American Express
Software Engineer Intern
Before thatNone listed
Went stealthSep 2026
Work
  • Software Engineer Intern at American Express2026-2026 · left Aug 2026
Education
  • Royal Holloway, University of LondonBachelor's
  • Uxbridge College

Christian Vela

Co-founder
Left
American Express
Investor, Amex Ventures
Before that
Went stealthAug 2026
Work
  • Investor, Amex Ventures at American Express2018-2021 · left Jan 2021
  • Private Equity at K1 Investment Management2016-2018
  • Economics Research Assistant at UCLA Anderson School of Management2015-2016
Education
  • UCLABachelor's

Aaron Fox

Founder CEO
Left
American Express
Director of Data Science
Before that
Went stealthAug 2026
Work
  • Director of Data Science at American Express2018-2026 · until Sep 2026
  • Data Science Manager at Microsoft2015-2017
  • Senior Data Scientst at Visa2012-2015
Education
  • UC BerkeleyBachelor's

Tejas Singh

Founder
Left
American Express
Product Manager - Global Merchant Network Services
Before that
Went stealthAug 2026
Work
  • Product Manager - Global Merchant Network Services at American Express2023-2026 · until Aug 2026
  • Extended Reality (XR) Developer & Product Lead at Arizona State University2022-2023
  • Product Manager Intern at American Express2022-2022
  • Co-Founder at Crooked Cards LLC2021-2021
  • Product Management Intern at Ashoka2021-2021
  • Cybersecurity Researcher at Ira A. Fulton Schools of Engineering at Arizona State University2020-2020
  • Data Analytics Intern at Million Dollar Teacher Project2020-2020
Education
  • Arizona State UniversityBachelor's
  • Arizona State University

Tiffany Tara Anderjaska

Founder
Left
American Express
Interim Full Cycle Recruiter via Oss
Before that
Went stealthJul 2026
Work
  • Interim Full Cycle Recruiter via Oss at American Express2019-2019 · left Apr 2019
  • Interim Lead - People, Talent & Efficiency at Tiffany Tara Consulting2025-2026
  • Talent at Shiftmove2025-2026
  • People and Culture Growth Ambassador at Repath2024-2025
  • Interim People Project Lead at Urban Sports Club2025-2025
  • People & Culture Consultant at Tiffany Tara Consulting2023-2025
  • Senior People Partner, People Operations at SPARROW.Parts2024-2024
Education
  • De La Salle University
  • Emotional Release BodyworkerBodyworker
  • Montgomery CollegeCertificate

Yannis Panagis

Co-Founder
Left
American Express
Software Engineer (Internship)
Before that
Went stealthJul 2026
Work
  • Software Engineer (Internship) at American Express2019-2019 · left Aug 2019
  • Chief Technology Officer at Behaviour Lab2021-2026
  • Student at Imperial College London2017-2021
  • Tutor at Firetech Camp2019-2021
  • Software Engineer at Next Jump2020-2020
  • Electrical Engineering Departmental Academic Representative at Imperial College London2017-2019
  • Corporate Investment Intern at Investcorp2016-2016
Education
  • Imperial College LondonMEng
  • Stanford University
  • British School of BahrainA-Level

Jawahar S.

Co-Founder
Left
American Express
Systems Engineer
Before that
Went stealthFeb 2026
Work
  • Systems Engineer at American Express2009-2013 · left Dec 2013
  • Project Head at Citi2017-2020
  • Business Analyst at Chase2014-2017

Sheetal Sharma

Co-Founder
Left
American Express
Product Management
Before thatNone listed
Went stealthJan 2026
Work
  • Product Management at American Express2020-2025 · left Dec 2025
Education
  • University of PennsylvaniaMaster's
  • BITS PilaniBachelor's

Tom K.

Co-Founder
Left
American Express
Senior Analytics Engineer
Before that
Went stealthMay 2025
Work
  • Senior Analytics Engineer at American Express2021-2023 · left May 2023
  • Business Intelligence Engineer at Promenade Group2020-2021
  • Chief Strategist, Architect at Hewlett Packard Enterprise2013-2020
  • Senior Director Data Engineering at Pactera US Careers2011-2013
  • Solutions Architect at Riot Games2010-2011
  • Senior Data Engineer at eharmony2005-2010
Education
  • Arizona State UniversityBS

Lavina Murjani

Founder
Left
American Express
Analyst
Before that
Went stealthDec 2024
Work
  • Analyst at American Express2015-2016 · left Jan 2016
  • Founder at Tarotit2022-2024
  • Marketing Head (Enabler) at School of Accelerated Learning2021-2022
  • Freelance Marketing Manager at Misa2019-2021
  • Senior Marketing Manager at NovaLash2018-2019
  • Digital Marketing Manager at Audi Gurgaon2017-2018
  • Senior Associate at Templatolio2017-2017
Education
  • Dayalbagh Educational Institute, AgraMBA
  • Dayalbagh Educational InstituteBachelor's

Built on Crustdata. Build your own.

Crustdata tracks hundreds of millions of professional profiles. This directory is one saved search: "current title includes founder, current company is Stealth", re-run every week. Point the same search at your own market.

Get an API key 
# the one request behind this page
curl https://api.crustdata.com/watch/person/search \
  -H "authorization: Bearer $CRUSTDATA_KEY" \
  -H "x-api-version: 2025-11-01" \
  -d '{
    "filters": { "op": "and", "conditions": [
      { "field": "experience.employment_details.current.company_name",
        "type": "[.]", "value": "stealth" },
      { "field": "experience.employment_details.current.title",
        "type": "(.)", "value": "founder" }
    ]},
    "fields": ["basic_profile", "experience", "education"],
    "config": { "trigger": { "type": "interval", "every_hours": 168 } }
  }'
# [.] = exact phrase, (.) = all words. Each week it returns only the new matches.

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About this list

What "stealth" means here: the person's current job is a founder title (Founder, Co-Founder, Founder & CEO…) at a company listed as "Stealth", "Stealth Startup" or similar, because they haven't announced it yet.

Where it comes from: public professional profiles, via the Crustdata API. A new search runs every week and adds whoever newly matches. Profiles can take a few weeks to show up, and start dates are by month.

The company on each row is the most recent job before going stealth, with the title they held there. Where we can, we skip internships, advisor seats and freelance stints. On a "former employer" page it shows the job at that employer instead. Click a row for their full work history and education.